Question: A buffer prepared by dissolving oxalic acid dihydrate (H,co, 2H,0) and disodium oxalate (Na,C,0,) in 1.00 L of water has a pH of 5.110.

A buffer prepared by dissolving oxalic acid dihydrate (H,co, 2H,0) and disodium

A buffer prepared by dissolving oxalic acid dihydrate (H,co, 2H,0) and disodium oxalate (Na,C,0,) in 1.00 L of water has a pH of 5.110. How many grams of oxalic acid dihydrate (MW = 126.07 g/mol) and disodium oxalate (MW = 133.99 g/mol) were required to prepare this buffer if the total oxalate concentration is 0.188 M? Oxalic acid has pk, values of 1.250 (pK) and 4.266 (pK). 3.4 mass of H,C,0, - 2H,0 Incorrect 21 mass of Na,C,0, = Inctrsect

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Solution pH of 5110 is close to pka2 of 4266 Hence our buffer is NaHC2O4 Na2C2O4 Na2C204 NA... View full answer

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